Mill for crushing bones



(No Model.) 2 Sheets-Sheet 1.

C. C; PHILLIPS.

MILL FOR GLUSHING BONES, MINERALS, Le. No. 408.515. Patented Aug. 6, 1889..

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. MILL FOR GRUSHING BONES, MINERALS, 6m. y No. 408,515. Patented Aug. 6, 1889..

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UNITED STATES PATENT OEEICE.

CALVIN C. PHILLIPS, OF PHILADELPHIA, PENNSYLVANIA.

MILL FOR CRUSHING BONES, MINERALS, s60.

SPECIFICATION forming part of Letters Patent No. 408,515, dated 'August 6, 1889.

Application led November 20, 1888. Serial No. 291,340. (No model.)

To a/ZZ whom, t may concern.-v

, forth in the following specification and accompanying drawings. I

My invention consists In improvements in Y mills as follows: First, of a hopper or pot of elliptical form in cross-section. breakeror Crusher which effectively reduces the material to a iineness suitable fora grind ing-mill when grinding is required.

The construction and operation of each part will be hereinafter fully set forth.

Figure 1 represents a top or plan view of the casing of a mill embodying my invention.- Fig. 2 represents a vertical section on line x :0, Fig. l. Fig. 3 represents a horizontal section on line y y, Fig. 2.- Fig. 4L represents a top view of the runner or burr. Fig. 5 represents a side elevation thereof. Fig. 6 represents a perspective view of a portion of the lower part ofthe casing on an enlarged scale. Fig. 7 represents a vertical section of the mill.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, A represents the casing of a mill, the sections B C of which are respectively conical and cylindrical in vertical section, the bottom rim of the section C flaring, as at D, and resting` on the base E, said sections being bolted or otherwise secured together.

F represents thef drivingshaft, which is supported vertically at or near its upper end on the cross-head G and rests on the step H. Connected with the shaft F is the runner J, which is toothed or has toothed portions, as at K L M, the portion K being perpendicular and the portions L M being conical, lthe toothed portion M widening from the base of the portion L and occupying the rim D of the casing. The toothed portion L occupies the section C, and the toothed portion K occupies the section B, the teeth of said portion K being scroll-shaped in cross-section,

Next, of a4 as will be seen in Fig. 4. On the inner face of the casing are teeth N P Q, respectively,

on the sections B C and rim D, the teeth P extending in rows in spiral direction from the top to the bottom of section C.

It'will be seen that when bone or other Inaterial is placed in the hopper and power imparted to the shaft F the material is unfailingly carried around by the teeth K of the runner against the teeth N, and thus gradually crushed or broken. In this condition the material enters between the teeth L P, where it is further crushed or broken, and next enters between the teeth M Q, where it is :reduced to a fineness sufficient for the stones of a grinding-mill.

The section or hopper B is elliptical in horizontal section, thus providing enlarged spaces in opposite sides of the same, adapting said section to receive skulls of animals, large bones, lumps or pieces of material, dac., in said spaces and cause the rapid breaking of such Inaterial as it is carried into the narrow spaces of the section.

Having thus described my invention,'what I claim as new, and desire to secure by Letters Patent, is

1. In a crushing and grinding mill, the combination of the elliptical hopper provided with teeth, the cylindrical casing having the rows of spirally-arranged teeth, the flaring rim on said casing, provided with teeth, the runner having the scroll-shaped teeth for operating in conjunction with the teeth of the hopper, and the teeth for operating in conj unct-ion with the teeth of the casing and rim thereof, substantially in the manner and for the purpose described.

2. In a grinding-mill, a hopper, in combination with a cylindrical casing, the latter having a flaring lower rim, the said hopper being provided with horizontal teeth and the casing with spirally-arranged teeth, a runner having a cylindrical portion with scroll-sh aped teeth, and the conical portions L and M, said conical portions having teeth, all substantially as and for the purpose set forth.

8. In a crushing and grinding mill, the combination of the elliptical hopper having a series of horiZontally-arranged teeth, the cylin- IOO drical casing having the roWs of spirally-aret. In a grinding-mill, the combination of an ranged teeth, and the Haring rim having teeth, elliptical hopper provided with teeth on its Io with the runner having the scrollshaped inner surface, a casing with teeth,.a.nd :t runteeth for operating in conjunction with the ner with teeth, substantially as described.

5 teeth of the rim, and the inclined teeth for CALVIN C. PHILLIPS.

operating in conjunction with the teeth of Titnessesz the casing and riin thereof, substantially in JOHN A. XVIEDERSHEIM, the manner and for the purpose described. JAMES F. KELLY. 

